CN102838097A - Method for removing magnesium oxide in phosphate concentrate through phosphatic fertilizer and phosphorus chemical industry acid wastewater - Google Patents
Method for removing magnesium oxide in phosphate concentrate through phosphatic fertilizer and phosphorus chemical industry acid wastewater Download PDFInfo
- Publication number
- CN102838097A CN102838097A CN201210337893XA CN201210337893A CN102838097A CN 102838097 A CN102838097 A CN 102838097A CN 201210337893X A CN201210337893X A CN 201210337893XA CN 201210337893 A CN201210337893 A CN 201210337893A CN 102838097 A CN102838097 A CN 102838097A
- Authority
- CN
- China
- Prior art keywords
- waste water
- acid waste
- phosphorus
- phosphorus concentrate
- magnesium oxide
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Landscapes
- Fertilizers (AREA)
- Removal Of Specific Substances (AREA)
Abstract
The invention discloses a method for removing magnesium oxide in phosphate concentrate through phosphatic fertilizer and phosphorus chemical industry acid wastewater. The method comprises the steps as follows: adding the acid wastewater and the phosphate concentrate pulp to a reacting groove to be reacted for 0.5 to 6 hours at 15 to 50 DEG C, so as to obtain reactive size; carrying out solid-liquid separation to the reactive size, wherein the solid phase produced by the separation is the phosphate concentrate with the magnesium oxide removed; and then preparing via a phosphoric acid by wet process. The method provided by the invention is simple in technology, easy to operate in the reaction, high in removal rate of magnesium oxide, low in loss ratio of the phosphorus in the phosphate concentrate, and high in economy.
Description
Technical field
The present invention relates to waste water reclamation, specifically relate to a kind of phosphate fertilizer and phosphorous chemical industry acid waste water of utilizing and remove method of magnesium oxide in the phosphorus concentrate.
Background technology
Phosphorus ore is a kind of important mineral wealth, is mainly used in to produce phosphoric acid, phosphate fertilizer and phosphate product.Because China's phosphorus ore is middle low grade ore mostly, these ore deposits adopt conventional two wet technologies to be difficult to obtain high-quality phosphoric acid because of containing a large amount of impurity, need could utilize through beneficiation enrichment phosphorus ore and removal of impurities.In the phosphorus ore impurity such as magnalium iron particularly the existence of magnesium can bring a series of totally unfavorable influences to the wet processes of phosphorus ore.Because magnesium salts will all be dissolved in the phosphoric acid solution in Wet-process Phosphoric Acid Production in the phosphorus ore; Can bring many adverse influences to production, problems such as granulation difficulty and product nitrogen nutrient deficiency when increasing sour viscosity, the production of phosphorus ammonium in the time of for example can increasing vitriolic consumption, the detersive efficiency when reducing phosphoric acid extraction, concentrated phosphoric acid.
For removing the impurity that comprises magnesium in the phosphorus ore, main both at home and abroad at present the employing physical method such as cleaned, positive reverse flotation and dense medium are chosen phosphorus ore separated with impurity, thereby reaches the purpose of enrichment phosphorus ore and removal of impurities.Yet only adopt the method for physical concentration, to some impurity for example magnesium can not reach good impurity-eliminating effect sometimes, the removal of impurities that needs research again to carry out other is handled.
In the production process of phosphate fertilizer and phosphorous chemical industry; Can produce a large amount of acid waste water; The waste water that produces when mainly containing the waste water that produces when producing sulfuric acid, the waste water that produces when producing phosphoric acid, production ALUMNIUM FLUORIDE etc. contain phosphoric acid, phosphoric acid salt, sulfuric acid, fluorochemical and suspended substance etc. in this acid waste water.In order to protect environment, these acid waste waters must pass through to handle and can discharge after up to standard.Study the utilization of this acid waste water, can reduce the processing load of enterprise's sewage, and reach the effect of energy-saving and emission-reduction simultaneously, environmental benefit is remarkable.Through retrieval, still there is not the patented claim that utilizes phosphate fertilizer and phosphorous chemical industry acid waste water to remove Natural manganese dioxide aspect in the phosphorus concentrate up to now, there is not relevant report yet.
Summary of the invention
The purpose of invention is to overcome above-mentioned shortcoming and provides a kind of phosphate fertilizer and phosphorous chemical industry acid waste water of utilizing to remove method of magnesium oxide in the phosphorus concentrate, and this method has that technology is simple, reaction is easy to operate, the Natural manganese dioxide decreasing ratio high, the low characteristics of phosphorus rate of loss in the phosphorus ore.
For realizing above-mentioned purpose, the technical scheme that the present invention adopts is: a kind of phosphate fertilizer and phosphorous chemical industry acid waste water of utilizing removes method of magnesium oxide in the phosphorus concentrate, may further comprise the steps:
(1) acid waste water and phosphorus concentrate slurry are added in the reactive tank react, additional proportion is that butt phosphorus concentrate adds by mass ratio 1～5:1 in acid waste water and the phosphorus concentrate slurry, and temperature of reaction is 15～50 ℃, and the reaction times is 0.5～6h, obtains reaction slurry;
(2) step (1) gained reaction slurry is carried out solid-liquid separation, separating obtained solid phase is used for producing of phosphoric acid by wet process for through removing the phosphorus concentrate after Natural manganese dioxide is handled; Separating obtained liquid phase send wastewater treatment equipment to handle.
Above-mentioned a kind of phosphate fertilizer and phosphorous chemical industry acid waste water of utilizing removes method of magnesium oxide in the phosphorus concentrate; Wherein said acid waste water is the acid waste water that phosphate fertilizer and phosphorous chemical industry industry produce; The quality percentage composition of staple Vanadium Pentoxide in FLAKES is 1.5%～6%; The quality percentage composition of fluorine is 0.4%～1.6%, and the pH value is 0.8～2.5.
Above-mentioned a kind of phosphate fertilizer and phosphorous chemical industry acid waste water of utilizing removes method of magnesium oxide in the phosphorus concentrate, and wherein said solid content in phosphate concentrate ore pulp is for being no less than 50%.
Above-mentioned a kind of phosphate fertilizer and phosphorous chemical industry acid waste water of utilizing removes method of magnesium oxide in the phosphorus concentrate, and wherein said butt phosphorus concentrate Vanadium Pentoxide in FLAKES quality percentage composition is for being no less than 26%, and Natural manganese dioxide quality percentage composition is for being no less than 0.7%.
Above-mentioned a kind of phosphate fertilizer and phosphorous chemical industry acid waste water of utilizing removes method of magnesium oxide in the phosphorus concentrate, and wherein said phosphorus concentrate slurry also can be a ground phosphate rock.
Above-mentioned a kind of phosphate fertilizer and phosphorous chemical industry acid waste water of utilizing removes method of magnesium oxide in the phosphorus concentrate, and wherein said reactive tank also can be a thickener.
Above-mentioned a kind of phosphate fertilizer and phosphorous chemical industry acid waste water of utilizing removes method of magnesium oxide in the phosphorus concentrate, and wherein the described solid phase phosphorus of step (2) concentrate can contain the acid waste water of quality percentage composition 8%～40%.
The acid waste water that the present invention utilizes phosphate fertilizer and phosphorous chemical industry industry to produce is handled the phosphorus concentrate, utilizes the slightly acidic of acid waste water to remove the impurity magnesium in the dephosphorization concentrate, and the quality of phosphorus concentrate is improved, and principle belongs to " weak acid de-magging ".Acid waste water is through after the above-mentioned art breading, and its acidity descends to some extent, thus reduced wastewater treatment equipment in and cost.Because the magnesium addition major part is removed in the phosphorus concentrate, make that vitriolic consumption will reduce in the follow-up phosphorus concentrate extraction process.The demagnesium rate of the phosphorus concentrate after above-mentioned art breading is 60%～90%, and the phosphorus rate of loss is below 2%.Because the solid phase phosphorus concentrate that reaction slurry carries out obtaining after the solid-liquid separation can contain part acid waste water; And contain part phosphorus in the acid waste water; In general; The phosphorus concentrate height that the phosphorous total amount of the moisture phosphorus concentrate of solid phase is more preceding than reaction does not only have the phosphorus loss so the phosphorus concentrate is handled through the present invention, has also reclaimed part phosphorus in the acid waste water on the contrary.From above-mentioned analysis can find out that the present invention has that technical process is simple, reaction is easy to operate, the Natural manganese dioxide decreasing ratio high, the characteristics of the low and good economy performance of phosphorus rate of loss the phosphorus ore.
Embodiment
For the ease of understanding the present invention, below examples of implementation set forth content of the present invention, content of the present invention is not limited only to following embodiment.
Embodiment 1
In reactive tank, add 1000kg acid waste water (P
2O
5The quality percentage composition is 3.5%, and F quality percentage composition is 0.7%, and the pH value is 1.7) and the 500kg solid content be 60% phosphorus concentrate slurry (butt phosphorus concentrate P
2O
5The quality percentage composition is 31.5%, and MgO quality percentage composition is 1.45%), at 40 ℃ of following stirring reaction 2h.With the slip solid-liquid separation, obtain solid phase 303kg and contain acid waste water 8%, wherein P in the phosphorus concentrate butt after reaction finishes
2O
5The quality percentage composition is 33.4%, and MgO quality percentage composition is 0.45%.The demagnesium rate of phosphorus concentrate is about 71.2% in the present embodiment, and the phosphorus rate of loss is about 1.5%.
Embodiment 2
In reactive tank, add 1000kg acid waste water (P
2O
5The quality percentage composition is 1.5%, and F quality percentage composition is 0.4%, and the pH value is 2.5) and the 286kg solid content be 70% phosphorus concentrate slurry (butt phosphorus concentrate P
2O
5The quality percentage composition is 26%, and MgO quality percentage composition is 3.28%), at 50 ℃ of following stirring reaction 6h.With the slip solid-liquid separation, obtain solid phase 293kg and contain acid waste water 40%, P in the phosphorus concentrate butt after reaction finishes
2O
5The quality percentage composition is 29.0%, and MgO quality percentage composition is 0.69%.The demagnesium rate of phosphorus concentrate is about 81.5% in the present embodiment, and the phosphorus rate of loss is about 1.9%, considers that 40% acid waste water that solid phase phosphorus concentrate contains brings part phosphorus into, and in general, the phosphorus concentrate of the phosphorous total amount of the moisture phosphorus concentrate of solid phase before than reaction increases about 1.4%.
Embodiment 3
In thickener, add 1000kg acid waste water (P
2O
5The quality percentage composition is 6%, and F quality percentage composition is 1.6%, and the pH value is 0.8) and the 2000kg solid content be 50% phosphorus concentrate slurry (butt phosphorus concentrate P
2O
5The quality percentage composition is 32.5%, and MgO quality percentage composition is 0.7%), react 0.5h down at 15 ℃.Reaction finishes back slip solid-liquid separation, obtains solid phase 1400kg and contains acid waste water 30%, P in the phosphorus concentrate butt
2O
5The quality percentage composition is 32.9%, and MgO quality percentage composition is 0.26%.The demagnesium rate of phosphorus concentrate is about 63.3% in the present embodiment, and the phosphorus rate of loss is about 0.8%, considers that 30% acid waste water that solid phase phosphorus concentrate contains brings part phosphorus into, and in general, the phosphorus concentrate of the phosphorous total amount of the moisture phosphorus concentrate of solid phase before than reaction increases about 3.2%.
Embodiment 4
The moisture phosphorus concentrate of the solid phase 303kg that obtains among the embodiment 1 is descended and 98% vitriol oil 252kg, P at 80 ℃
2O
5The quality percentage composition is that 18% dilute phosphoric acid (returning acid) 1050kg carried out the phosphoric acid by wet process extractive reaction 4 hours, obtains P after filtering gypsum
2O
5The quality percentage composition is 27% phosphoric acid 600kg, obtains P behind the washing gypsum
2O
5The quality percentage composition is 14% dilute phosphoric acid 842kg, and the rate of decomposition of phosphorus concentrate is about 97%.
Embodiment 5
Use lime to be neutralized to pH value 8.5 liquid phase of solid-liquid separation among the embodiment 1, consumption lime (CaO content is 65%) 36kg directly uses in the lime if the acid waste water among the embodiment 1 does not go to handle the phosphorus concentrate and will consume lime 44kg.
Claims (7)
1. utilize phosphate fertilizer and phosphorous chemical industry acid waste water to remove method of magnesium oxide in the phosphorus concentrate, it is characterized in that it is made up of following steps:
(1) acid waste water and phosphorus concentrate slurry are added in the reactive tank react, additional proportion is that butt phosphorus concentrate adds by mass ratio 1～5:1 in acid waste water and the phosphorus concentrate slurry, and temperature of reaction is 15～50 ℃, and the reaction times is 0.5～6h, obtains reaction slurry;
(2) step (1) gained reaction slurry is carried out solid-liquid separation, separating obtained solid phase is used for producing of phosphoric acid by wet process for through removing the phosphorus concentrate after Natural manganese dioxide is handled; Separating obtained liquid phase send wastewater treatment equipment to handle.
2. remove method of magnesium oxide in the phosphorus concentrate according to said phosphate fertilizer and the phosphorous chemical industry acid waste water of utilizing of claim 1; It is characterized in that described acid waste water is the acid waste water that phosphate fertilizer and phosphorous chemical industry industry produce; The quality percentage composition of staple Vanadium Pentoxide in FLAKES is 1.5%～6%; The quality percentage composition of fluorine is 0.4%～1.6%, and the pH value is 0.8～2.5.
3. remove method of magnesium oxide in the phosphorus concentrate according to said phosphate fertilizer and the phosphorous chemical industry acid waste water of utilizing of claim 1, it is characterized in that described solid content in phosphate concentrate ore pulp is for being no less than 50%.
4. remove method of magnesium oxide in the phosphorus concentrate according to said phosphate fertilizer and the phosphorous chemical industry acid waste water of utilizing of claim 1; The quality percentage composition that it is characterized in that described butt phosphorus concentrate Vanadium Pentoxide in FLAKES is for being no less than 26%, and Natural manganese dioxide quality percentage composition is for being no less than 0.7%.
5. remove method of magnesium oxide in the phosphorus concentrate according to said phosphate fertilizer and the phosphorous chemical industry acid waste water of utilizing of claim 1, it is characterized in that described phosphorus concentrate slurry also can be a ground phosphate rock.
6. remove method of magnesium oxide in the phosphorus concentrate according to said phosphate fertilizer and the phosphorous chemical industry acid waste water of utilizing of claim 1, it is characterized in that described reactive tank also can be a thickener.
7. remove method of magnesium oxide in the phosphorus concentrate according to said phosphate fertilizer and the phosphorous chemical industry acid waste water of utilizing of claim 1, it is characterized in that the described solid phase phosphorus of step (2) concentrate can contain the acid waste water of quality percentage composition 8%～40%.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210337893XA CN102838097A (en) | 2012-09-13 | 2012-09-13 | Method for removing magnesium oxide in phosphate concentrate through phosphatic fertilizer and phosphorus chemical industry acid wastewater |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210337893XA CN102838097A (en) | 2012-09-13 | 2012-09-13 | Method for removing magnesium oxide in phosphate concentrate through phosphatic fertilizer and phosphorus chemical industry acid wastewater |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102838097A true CN102838097A (en) | 2012-12-26 |
Family
ID=47365866
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210337893XA Pending CN102838097A (en) | 2012-09-13 | 2012-09-13 | Method for removing magnesium oxide in phosphate concentrate through phosphatic fertilizer and phosphorus chemical industry acid wastewater |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102838097A (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103303884A (en) * | 2013-05-27 | 2013-09-18 | 瓮福（集团）有限责任公司 | Method for treating phosphorus concentrates and recovering phosphorus by using phosphogypsum slag dump pool water |
| CN104261361A (en) * | 2014-09-11 | 2015-01-07 | 云南红富化肥有限公司 | Washing and direct flotation method of low-grade refractory argillaceous phosphorite |
| CN106745105A (en) * | 2016-12-29 | 2017-05-31 | 云南磷化集团有限公司 | A kind of gypsum stack backwater is used for the method that high-magnesium-phosphorus ore drop magnesium carries phosphorus |
| CN107055495A (en) * | 2017-04-25 | 2017-08-18 | 贵州芭田生态工程有限公司 | A kind of acid phosphorus-containing wastewater is used for the method for phosphorus ore de-magging |
| CN109455684A (en) * | 2018-12-12 | 2019-03-12 | 贵州芭田生态工程有限公司 | Utilize the method for the thick calcium nitrate preparation phosphorus concentrate of nitrophosphate fertilizer by-product |
| CN110090737A (en) * | 2019-04-23 | 2019-08-06 | 云南磷化集团有限公司 | A method of processing collophane direct flotation concentrate pulp and tailing ore pulp |
| CN110483125A (en) * | 2019-08-02 | 2019-11-22 | 史丹利化肥当阳有限公司 | Utilize the method for waste phosphoric acid production S-based compound fertilizer raw material |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1035093A (en) * | 1988-02-13 | 1989-08-30 | 湖南大学 | A kind of technology for removal of magnesium from phosphorous ore |
| CN1724340A (en) * | 2005-06-08 | 2006-01-25 | 贵州宏福实业开发有限总公司 | Process for comprehensive using waste water of phosphatic fertilize and phosphorous chemical industrial |
| CN101759166A (en) * | 2009-12-31 | 2010-06-30 | 四川龙蟒钛业股份有限公司 | Method for pre-treating phosphorite by using acidic waste water in the production process of titanium pigment |
-
2012
- 2012-09-13 CN CN201210337893XA patent/CN102838097A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1035093A (en) * | 1988-02-13 | 1989-08-30 | 湖南大学 | A kind of technology for removal of magnesium from phosphorous ore |
| CN1724340A (en) * | 2005-06-08 | 2006-01-25 | 贵州宏福实业开发有限总公司 | Process for comprehensive using waste water of phosphatic fertilize and phosphorous chemical industrial |
| CN101759166A (en) * | 2009-12-31 | 2010-06-30 | 四川龙蟒钛业股份有限公司 | Method for pre-treating phosphorite by using acidic waste water in the production process of titanium pigment |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103303884A (en) * | 2013-05-27 | 2013-09-18 | 瓮福（集团）有限责任公司 | Method for treating phosphorus concentrates and recovering phosphorus by using phosphogypsum slag dump pool water |
| CN104261361A (en) * | 2014-09-11 | 2015-01-07 | 云南红富化肥有限公司 | Washing and direct flotation method of low-grade refractory argillaceous phosphorite |
| CN106745105A (en) * | 2016-12-29 | 2017-05-31 | 云南磷化集团有限公司 | A kind of gypsum stack backwater is used for the method that high-magnesium-phosphorus ore drop magnesium carries phosphorus |
| CN107055495A (en) * | 2017-04-25 | 2017-08-18 | 贵州芭田生态工程有限公司 | A kind of acid phosphorus-containing wastewater is used for the method for phosphorus ore de-magging |
| CN109455684A (en) * | 2018-12-12 | 2019-03-12 | 贵州芭田生态工程有限公司 | Utilize the method for the thick calcium nitrate preparation phosphorus concentrate of nitrophosphate fertilizer by-product |
| CN110090737A (en) * | 2019-04-23 | 2019-08-06 | 云南磷化集团有限公司 | A method of processing collophane direct flotation concentrate pulp and tailing ore pulp |
| CN110090737B (en) * | 2019-04-23 | 2021-03-16 | 云南磷化集团有限公司 | Method for treating collophanite direct flotation concentrate pulp and tailing pulp |
| CN110483125A (en) * | 2019-08-02 | 2019-11-22 | 史丹利化肥当阳有限公司 | Utilize the method for waste phosphoric acid production S-based compound fertilizer raw material |
| CN110483125B (en) * | 2019-08-02 | 2022-03-04 | 史丹利化肥当阳有限公司 | Method for producing raw material for sulfur-based compound fertilizer by using waste phosphoric acid |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102838097A (en) | Method for removing magnesium oxide in phosphate concentrate through phosphatic fertilizer and phosphorus chemical industry acid wastewater | |
| CN102220488B (en) | Method for separating rare earth from phosphate ore | |
| CN100558633C (en) | The method for preparing PHOSPHORIC ACID TECH.GRADE, food grade phosphoric acid and industrial monoammonium phosphate with phosphoric acid by wet process | |
| CN103213964B (en) | Low-grade phosphate ore is utilized to produce the method for phosphoric acid by wet process | |
| CN100392124C (en) | Method of retrieving magnesium from high magnesium phosphorus ore | |
| CN103213960A (en) | Method for producing phosphoric acid by decomposing low-grade phosphate rock with wet-process phosphoric acid | |
| CN103466579B (en) | The method of the complete water-soluble monoammonium phosphate of Wet-process Phosphoric Acid Production | |
| CN106348273B (en) | A kind of extractant and its extracting process of hydrochloric acid legal system industrial phosphoric acid | |
| CN104445300A (en) | Method of preparing magnesium hydroxide and calcium carbonate and separating out phosphorus ores by taking phosphate tailings as raw materials through ammonia circulation process | |
| CN101440430A (en) | Method for recycling rare earth from phosphogypsum leaching solution by fluoride precipitation method | |
| CN103073034B (en) | Method for removing magnesium from ultralow-quality phosphate rock and producing magnesium hydroxide | |
| CN103553722A (en) | Method for preparing super phosphate by use of ardealite slag site sewage | |
| CN104071818A (en) | Method for separating calcium, magnesium and phosphorus elements from phosphate tailings by adopting water leaching and ammonium leaching | |
| CN107473775B (en) | Method for recovering phosphorus and fluorine in phosphoric acid concentrated slag acid and co-producing low-fluorine water-soluble fertilizer | |
| CN107879321B (en) | Method for demagging phosphate rock and co-producing sodium fluosilicate and magnesium sulfate | |
| CN104311190A (en) | Method for producing high concentration chlorine-based composite fertilizer by partially decalcifying hydrochloric acid decomposed phosphorite | |
| CN101704518B (en) | Method for purifying raffinate acid | |
| CN107827113A (en) | In a kind of industrial monoammonium phosphate and slurry in fluorine recovery method | |
| CN100528743C (en) | Process for preparing high purity phosphoric acid-ammonium by titanium dioxide waste acid | |
| CN103303884A (en) | Method for treating phosphorus concentrates and recovering phosphorus by using phosphogypsum slag dump pool water | |
| CN102211956A (en) | Utilization method of middle-low grade phosphate ore containing rare earth | |
| CN103435376A (en) | Method and apparatus used for preparing ammonium phosphate fertilizer from phosphoric acid sediment | |
| CN105731513A (en) | Method for preparing rare earth oxide by leaching rare earth-containing phosphorite from regenerated phosphoric acid | |
| CN102515134A (en) | Production technology of food-grade phosphoric acid with hydrochloric acid method | |
| CN103359700A (en) | Method for saving acid and reducing ammonium in ammonium phosphate production |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20121226 |